Hello,
I have an Allo volt +D that I want to put in a smaller box and, as I don't use the volume control and it is quite bulky, I want to get rid of it, and ideally substitute it for a two position switch (max. Vol and say 60% vol).
Does anyone know which of the 6 cables I need to short or connect resistors to (in the case of the switch option)?
Thanks a lot in advance.
I have an Allo volt +D that I want to put in a smaller box and, as I don't use the volume control and it is quite bulky, I want to get rid of it, and ideally substitute it for a two position switch (max. Vol and say 60% vol).
Does anyone know which of the 6 cables I need to short or connect resistors to (in the case of the switch option)?
Thanks a lot in advance.
Hi. I dont have it, nor have i've ever seen one in person, but i found this picture when googling it.
https://www.allo.com/shop/1943-thickbox/volt-plus-d-amplifier-eu.jpg
Here you quite easily see the pins defined in the print next to the attenuator terminal. The text you're looking for is OUT GND and IN
If you want to short the the signal, and get the full voltage from IN to OUT, those are the ones you want to short.
You dont want any signal to go to GND (ground).
If you want to Attenuate the volume with a switch.. thats pritty much exactly what the stepped attenuator does, just with more steps.
The stepped attenuator looks to be really nice, i'd consider keeping it instad of having another switch attenuating the signal. Its not even a lot bigger than a switch and probably a better solution to attenuation than limiting the signal digitally if thats the option. Especially if you add the switch for the two step volume, but thats for you to decide of course 🙂.
https://www.allo.com/shop/1943-thickbox/volt-plus-d-amplifier-eu.jpg
Here you quite easily see the pins defined in the print next to the attenuator terminal. The text you're looking for is OUT GND and IN
If you want to short the the signal, and get the full voltage from IN to OUT, those are the ones you want to short.
You dont want any signal to go to GND (ground).
If you want to Attenuate the volume with a switch.. thats pritty much exactly what the stepped attenuator does, just with more steps.
The stepped attenuator looks to be really nice, i'd consider keeping it instad of having another switch attenuating the signal. Its not even a lot bigger than a switch and probably a better solution to attenuation than limiting the signal digitally if thats the option. Especially if you add the switch for the two step volume, but thats for you to decide of course 🙂.
Hi Vemsom,
Thanks a lot, I have found eventually a lot of information on the attenuator in allo's website (they also sell it separately), and yes, the way to do it is to short in and out and put a 10k resistor to ground. Did it and works perfectly.
My problem with the attenuator is that it is very big and to be honest I never use it. I agree it works very good but I am placing the Amp in a smaller box and I need the extra space to put a raspberry pi to steam the music, so the attenuator must go.
I tried the two position switch and it works but unfortunately it introduces too much noise. I can imagine that there are much better switches than the one I tried but it needs to be 4pdt and the good ones get expensive fast and again, are bulky. Together with my poor soldering, the simpler the better: volume control in the digital signal and call it a day.
Thanks a lot again, now I am trying to add a oled screen, lets see how it ends up 🙂
Thanks a lot, I have found eventually a lot of information on the attenuator in allo's website (they also sell it separately), and yes, the way to do it is to short in and out and put a 10k resistor to ground. Did it and works perfectly.
My problem with the attenuator is that it is very big and to be honest I never use it. I agree it works very good but I am placing the Amp in a smaller box and I need the extra space to put a raspberry pi to steam the music, so the attenuator must go.
I tried the two position switch and it works but unfortunately it introduces too much noise. I can imagine that there are much better switches than the one I tried but it needs to be 4pdt and the good ones get expensive fast and again, are bulky. Together with my poor soldering, the simpler the better: volume control in the digital signal and call it a day.
Thanks a lot again, now I am trying to add a oled screen, lets see how it ends up 🙂